Rotary brush



E. 1 PETTY 2,153,207

RQTARY BRUSH yApril 4, 1939.

Filed Feb. l2, 1938 Zorney Patented Apr. 4, 1939 PATENT OFFICE Ronny BRUSH Edward L. Petty, Brazil, Ind., assignor toV Continental CarNaVar Corporation, Brazil, Ind.

Application February 12, 1938, Serial No. 190,178

2 Claims.

This invention relates to scrubbing brushes, particularly of the type adapted to be employed in conjunction with power driven portable units for the purpose of scrubbing rugs, Iioors, and the like. It is a. primary object of my invention to provide a brush structure which upon revolving will carry and distribute a washing iuid over the top of the brush to give substantially an equal distribution of the fluid from the inner to the outer portion of the brush regardless of centrifugal action tending to throw the uid principally to the outer portion of the brush.

It is a further primary object of my invention i to provide means to prevent overflow or splashl" over of the fluid about the outer edge of the brush back, should an excess of fluid be fed to the brush.

Reference is made to my U. S. Letters Patent No. 2,021,608, issued November 19, 1935.

The foregoing and other objects and advantages of the invention will become apparent to those versed in the art from the following description of one particular form of my invention .as illustrated by'the accompanying drawing, in which Fig. 1 is a top plan View of a brush embodying my invention;

Fig. 2, a central vertical section through the brush on the line 2-2 in Fig. 1;

` Fig. 3, a bottom plan view; and

Fig. 4 a modified form in fragmentary central, vertical section.

Like characters of reference indicate like parts in the several views in the drawing.

I form a head I0 which has a central boss IlA to which is attached a driving member I2.

The head is provided with a peripheral upturned flange I 3 and the annular surface between the flange I3 and the boss II is formed to have an annular groove Il and plurality of depressed regions I5 each arcuate in formation and being non-radial of the head I0. The regions I5 are in fact arranged in a more or less convoluted manner to leave partitioning ribs I0 therebetween and the inner ends of these regions communicate with the annular depressed region I4 of like depth immediately around the boss II.

Each of these ribs I6 is hollowed out from the under side of the head III to receive therein the upper looped ends of bristles I1 which are secured in place by wire I8 threaded through holes in the ribs I6 and under the looped ends of the bristles. I provide holes I9 around the under side of the head I0 adjacent the peripheral edge and insert therein the upper looped ends of bristles and secure them in place by wire 2i passing through holes .through the head and down under the loops and back up again.

In the groove I4 I provide a plurality of holes through the head. Also in the regions l5 I pro- 5 vide a plurality of holes 22 in spaced apart relation. In operation, fluid is allowed to drop into the groove I4 from the nozzle 24 and the brush is revolved through the driving member i2 in a counterclockwise direction so that the outer l0 leading ends of the regions I5 are ahead of thev inner ends of the regions i5.

Normally centrifugal actionjset up by the rey volving of the brush throws the iluid outwardly in the groove lli into each of the regions i5 and 35 would tend tov further cause the fluid to travel quickly to the outer ends of those regions i5. However, by reason of the positioning of the regions I5, a certain amount of centripetal action is set up tending to overcome in' part the cen- 20 trifugal action thereby slowing up the travel of the fluid to the outer ends of the regions i5 so that the uid will drop more or less uniformly downwardly through the head I0 through all of the holes provided in the head. In fact if there 25 be any difference in distribution, more of the fluid will drop through the head toward the inner ends of the regions I5 rather than have va majorityr of the uid ily to the outer ends and then drop through.

Since the bristles I'I extending below the head I0 follow the curvature of the regions I5, by reason o'f their being attached to follow the lanes of the ribs I6, uid dropping throughl the .holes 2| will drop between the arcuate rows of bristles 35 I1 or ow theredown on the bristles. Now since the outer end of each row of bristles' I'I is ahead of its inner end, the various rows of bristles I1 will tend to pull the fluid inwardly toward the center of the brush rather than throw it out- 40 wardly were the bristles to be arranged concentrically about the axis of rotation of .the brush. Preferably I provide an inner anular row of bristles 23 to trap or rather stop the inward iiow of the uid. Of course in using the brush, it is moved bodily along over the iioor so that all areas of the iloor will be ultimately scrubbed.

As above indicated. the Huid-washing, rinsing, dyeing, etc-is owed onto the brush back from the nozzle 24. The control of this fluid ilow is had by a valve 25 of any suitable nature in the pipe-line leading to the nozzle 24, whereby the ilow may be varied in rate and completely cut oil. Under some conditions, the fluids poured onto the brushback may be in such quantity u as to have some carried to the outer ends of the regions I5 .and then tend to climb over the ilange I8 and be thrown therefrom to wet baseboards or areas of the floor beyond the brush, which effect is of course undesirable.

In order to control this situation, a plate 26 in the nature of a disc is provided over the ribs I6 to have its outer periphery contact the fiange I3. The central portion of the disc 26 is left open at least over the groove I4' so as to leave room for discharge of fluid from the nozzle `24 into the groove. While the disc may be made an integral part of the brush back, it is preferably madeto be removable as shown in the drawing and secured in place by any suitable means such as screws 21. 'I'he essential feature in connection with the disc 26 is that it prevents escape of uid from the ends of the regions I5 and flow therefrom over the flange I 3. By making the disc 26 removable, the brush back may be refilled with new bristles when the old ones wear too short, and also, the holes 22 may be readily openedand the regions I5 cleaned should any clogging occur.

In the form shown wherein wires I8 and 2Ilare employed to secure the bristles, and wherein the wires extend across .the top sides of the ribs I6 rather than being embedded therein. these wires serve quite well inthe nature of a gasket against -which the disc 26 is yieldingly drawn by the screws/21, and not only is flow from the ends of .the regions I5 prevented but each region I5 then becomes substantially sealed one from the other.

. While the foregoing description relates to use of the plate 26 as applied to a ribbed back brush, it is entirely practicable to employ a smooth back brush-one without ribs-and space the cover plate above the fluid receiving floor of the brush.

Y For example, as indicated in Fig. 4, the brush back 28 is devoid of ribs or corrugations, and, from the top of the outer flange 29, a cover plate 39 extends, integrally in the illustration (although it may bemade to be a. separate member for convenience) inwardly over the back 28 spaced thereabove a. suillcient distance so as to permit fluid poured onto the brush back to spread out on the back and ow down through perforations 3l of and desired contour to the under side of the brush.

By reason of the cover 30. the fluid cannot be thrown laterally from the brush back under any centrifugal action. so that a very` effective control of the uid is obtained.

While I have herein shown and described my invention in the best form as now known to me,

it is obvious that structural changes may be made without departing from the spirit of the invention and I therefore do not desire to be limited to this precise form beyond the limitations as may be imposed by the following claims.

I claim:l

1. A revoluble scrubbing brush adapted to be employed with a iluid poured onto the top side of the brush, comprising a head having on its upper side a fluid distributing area and a plurality of arcuate depressed regions in said area, all of the regions having a plurality of uid discharge holes in their under sides; a plurality of rows of bristles carried by the head to extend downwardly therefrom; adriving member to revolve the brush, said regions being formed to have their outer ends spaced around a head oftheir 'inner ends when the head is revolved whereby the side walls of said depressed regions tend inpart to overcome the centrifugal effect on i'luid in the groove; a flange around said brush; and a plate extending inwardly from said flange over at least the outer portions of said regions; ribs extending between and-defining side walls of said regions; and said plate being seated on said ribs.

2. A revoluble scrubbing brush adapted to be employed with a fluid poured onto the top side of the brush, comprising a head having on its upper side, a nur@ distributing area, ,and a plurality of arcuate depressed regions in said area, all of the regions having a plurality of fluid discharge holes in their under sides; a plurality of rows of bristles carried by the head to extend downwardly therefrom, a driving member to revolve the brush, said regions being formed to have their outer ends spaced around ahead of their inner ends when the head is revolved whereby the side walls of said depressed regions tend in part to overcome the centrifugal effect on fluid in the groove, a ange around said brush, and a plate extending inwardly from said ange over at least the outer portions of said regions, wires extending along and through said ribs to engage said bristles, said wires intervening between said plate and said ribs, and means drawing said plate compressibly thereagainst.

EDWARD L. PE'I'I'Y. 

